The benchmark US stock measures were tracking in the red before Friday's open as traders await the personal income and outlays report for November.

Standard & Poor's 500 declined 0.8%, the Dow Jones Industrial Average decreased 0.4% and the Nasdaq was off 1.3% in premarket activity. Asian and European exchanges were pointing lower.

The personal income report is scheduled for an 8:30 am ET release and includes the personal consumption expenditure core price index, the Federal Reserve's preferred inflation metric.

Friday's economic calendar also has the final University of Michigan consumer sentiment report for December at 10 am, followed by the weekly Baker Hughes domestic oil-and-gas rig count at 1 pm.

Nike's (NKE) shares fell 4.1% pre-bell as the athletic footwear and apparel maker flagged revenue and gross margin declines in its ongoing fiscal third quarter, despite reporting better-than-expected results in the preceding three-month period. FedEx (FDX) jumped 9.1% as the parcel delivery giant reported quarterly results and announced plans to spin off its freight operations into a separate publicly listed company.

Carnival (CCL, CUK) and Winnebago Industries (WGO) report their latest financial results early Friday, among others.

Before the opening bell, bitcoin dropped 3.8% to $92,816, West Texas Intermediate crude oil moved down 1.2% to $68.53 a barrel, yields on 10-year Treasuries retreated 2.6 basis points to 4.54% and gold inclined 0.4% to $2,618 an ounce.